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ome tempting fruit within； allowed both a young orang and chimpanzee to try their utmost to get it out； but although they grew rather cross； they showed not a trace of a frown。 Nor was there any frown when they were enraged。 Twice I took two chimpanzees from their rather dark room suddenly into bright sunshine； which would certainly have caused us to frown； they blinked and winked their eyes； but only once did I see a very slight frown。 On another occasion； I tickled the nose of a chimpanzee with a straw； and as it crumpled up its face； slight vertical furrows appeared between the eyebrows。 I have never seen a frown on the forehead of the orang。
＇18＇ Prof。 Owen on the Orang； Proc。 Zool。 Soc。 1830； p。 28。 On the Chimpanzee； see Prof。 Macalister； in Annals and Mag。 of Nat。 Hist。 vol。 vii。 1871； p。 342； who states that the _corrugator supercilii_ is inseparable from the _orbicularis palpebrarum_。
The gorilla； when enraged； is described as erecting its crest of hair； throwing down its under lip； dilating its nostrils； and uttering terrific yells。 Messrs。 Savage and Wyman＇19＇ state that the scalp can be freely moved backwards and forwards； and that when the animal is excited it is strongly contracted； but I presume that they mean by this latter expression that the scalp is lowered； for they likewise speak of the young chimpanzee； when crying out； as having the eyebrows strongly contracted。〃 The great power of movement in the scalp of the gorilla； of many baboons and other monkeys； deserves notice in relation to the power possessed by some few men； either through reversion or persistence； of voluntarily moving their scalps。＇20＇
_Astonishment； Terror_A living fresh…water turtle was placed at my request in the same compartment in the Zoological Gardens with many monkeys； and they showed unbounded astonishment； as well as some fear。 This was displayed by their remaining motionless； staring intently with widely opened eyes； their eyebrows being often moved up and down。 Their faces seemed somewhat lengthened。 They occasionally raised themselves on their hind…legs to get abetter view。 They often retreated a few feet； and then turning their heads over one shoulder； again stared intently。 It was curious to observe how much less afraid they were of the turtle than of a living snake which I had formerly placed in their compartment；＇21＇ for in the course of a few minutes some of the monkeys ventured to approach and touch the turtle。 On the other hand； some of the larger baboons were greatly terrified； and grinned as if on the point of screaming out。 When I showed a little dressed…up doll to the _Cynopithecus niger_； it stood motionless； stared intently with widely opened eyes； and advanced its ears a little forwards。 But when the turtle was placed in its compartment； this monkey also moved its lips in an odd； rapid； jabbering manner； which the keeper declared was meant to conciliate or please the turtle。
＇19＇ Boston Journal of Nat。 Hist。 1845…47； vol。 v。 p。 423。 On the Chimpanzee； ibid。 1843…44； vol。 iv。 p。 365。
＇20＇ See on this subject； ‘Descent of Man；' vol。 i。 p。 20。
I was never able clearly to perceive that the eyebrows of astonished monkeys were kept permanently raised； though they were frequently moved up and down。 Attention； which precedes astonishment； is expressed by man by a slight raising of the eyebrows； and Dr。 Duchenne informs me that when he gave to the monkey formerly mentioned some quite new article of food； it elevated its eyebrows a little； thus assuming an appearance of close attention。 It then took the food in its fingers； and； with lowered or rectilinear eyebrows； scratched； smelt； and examined it； an expression of reflection being thus exhibited。 Sometimes it would throw back its head a little； and again with suddenly raised eyebrows re…examine and finally taste the food。
In no case did any monkey keep its mouth open when it was astonished。 Mr。 Sutton observed for me a young orang and chimpanzee during a considerable length of time； and however much they were astonished； or whilst listening intently to some strange sound； they did not keep their mouths open。 This fact is surprising； as with mankind hardly any expression is more general than a widely open mouth under the sense of astonishment。 As far as I have been able to observe； monkeys breathe more freely through their nostrils than men do； and this may account for their not opening their mouths when they are astonished； for； as we shall see in a future chapter； man apparently acts in this manner when startled； at first for the sake of quickly drawing a full inspiration； and afterwards for the sake of breathing as quietly as possible。
＇21＇ ‘Descent of Man；' vol； i。 p； 43。
Terror is expressed by many kinds of monkeys by the utterance of shrill screams； the lips being drawn back； so that the teeth are exposed。 The hair becomes erect； especially when some anger is likewise felt。 Mr。 Sutton has distinctly seen the face of the _Macacus rhesus_ grow pale from fear。 Monkeys also tremble from fear； and sometimes they void their excretions。 I have seen one which； when caught； almost fainted from an excess of terror。
Sufficient facts have now been given with respect to the expressions of various animals。 It is impossible to agree with Sir C。 Bell when he says＇22＇ that 〃the faces of animals seem chiefly capable of expressing rage and fear；〃 and again； when he says that all their expressions 〃may be referred； more or less plainly； to their acts of volition or necessary instincts。〃 He who will look at a dog preparing to attack another dog or a man； and at the same animal when caressing his master； or will watch the countenance of a monkey when insulted； and when fondled by his keeper； will be forced to admit that the movements of their features and their gestures are almost as expressive as those of man。 Although no explanation can be given of some of the expressions in the lower animals； the greater number are explicable in accordance with the three principles given at the commencement of the first chapter。
＇22＇ ‘Anatomy of Expression；' 3rd edit。 1844； pp。 138； 121。 CHAPTER VI。
SPECIAL EXPRESSIONS OF MAN： SUFFERING AND WEEPING。
The screaming and weeping Of infantsForms of features Age at which weeping commencesThe effects of habitual restraint on weepingSobbingCause of the contraction of the muscles round the eyes during screamingCause of the secretion of tears。
IN this and the following chapters the expressions exhibited by Man under various states of the mind will be described and explained； as far as lies in my power。 My observations will be arranged according to the order which I have found the most convenient； and this will generally lead to opposite emotions and sensations succeeding each other。
_Suffering of the body and mind： weeping_。I have already described in sufficient detail； in the third chapter； the signs of extreme pain； as shown by screams or groans； with the writhing of the whole body and the teeth clenched or ground together。 These signs are often accompanied or followed by profuse sweating； pallor； trembling； utter prostration； or faintness。 No suffering is greater than that from extreme fear or horror； but here a distinct emotion comes into play； and will be elsewhere considered。 Prolonged suffering； especially of the mind； passes into low spirits； grief； dejection； and despair； and these states will be the subject of the following chapter。 Here I shall almost confine myself to weeping or crying； more especially in children。
Infants； when suffering even slight pain； moderate hunger； or discomfort； utter violent and prolonged screams。 Whilst thus screaming their eyes are firmly closed； so that the skin round them is wrinkled； and the forehead contracted into a frown。 The mouth is widely opened with the lips retracted in a peculiar manner； which causes it to assume a squarish form； the gums or teeth being more or less exposed。 The breath is inhaled almost spasmodically。 It is easy to observe infants whilst screaming； but I have found photographs made by the instantaneous process the best means for observation； as allowing more deliberation。 I have collected twelve； most of them made purposely for me； and they all exhibit the same general characteristics。 I have； therefore； had six of them＇1＇ （Plate I。） reproduced by the heliotype process。
The firm closing of the eyelids and consequent compression of the eyeball；and this is a most important element in various expressions；serves to protect the eyes from becoming too much gorged with blood； as will presently be explained in detail。 With respect to the order in which the several muscles contract in firmly compressing the eyes； I am indebted to Dr。 Langstaff； of Southampton； for some observations； which I have since repeated。 The best plan for observing the order is to make a person first raise his eyebrows； and this produces transverse wrinkles across the forehead； and then very gradually to contract all the muscles round the elves with as much force as possible。 The reader who is unacquainted with the anatomy of the face； ought to refer to p。 24； and look at the woodcuts 1 to 3。 The corrugators of the brow （_corruga